"One variable remains consistent across all networked movements: The moderation policies of different platforms directly affect how groups amplify political ideologies online. White supremacists and other extremists tend to use anonymous message boards to plan manipulation campaigns. These places traffic in racist, sexist, and transphobic content and link to obscure podcasts and blogs. Moderation is rare and tends to occur only when too much attention is drawn to a certain post. In some forums, posts self-delete and leave few traces behind."